Insulator.



E. HARLAN.

INSULATOR.

APPLICATlON FILED JAN.12,1914.

Patented July 11, 1916.

JIHHIIIMI" WWW EARLE HARLA'N, OF FRESNO, CALIFORNIA.

INSULATOR.

Application filed January 12, 1914.

To all whom it may concern:

Be it known that 1, EAnLn HARLAN, a citizen of the United States, residing at Fresno, in the county of Fresno, State of California, have invented certain new and useful Improvements in Insulators; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to insulators for electric wires and has for an object to provide an insulator that will have two hearing points for the tie wire, and such bearing points being formed as to securely hold the tie wires without danger of mutilating the same.

A further object is to provide an insulator comprising an inner member and a cap therefor, the parts being so connected to gether that access of moisture to the interior will be reduced to a minimum.

A still further object is to provide an insulator which will be simple and inexpensive, and will be composed of a few durable parts, will not easily get out of order and reduce the escape of the current to a minimum.

With these and other objects in view, this invention resides in the novel features of construction, formation, combination and arrangement of parts to be hereinafter more fully described, claimed and illustrated in the accompanying drawing, in which Figure 1 is a front elevation. Fig. 2 is a side elevation. Fig. 3 is a longitudinal section. Fig. 4.- is a cross section on line 4-4 of Fig. 3. Fig. 5 is a side elevation of the base. Fig. 6 is a bottom plan view thereof.

Referring now to the drawing in which like characters of reference designate similar parts, 10 designates a base having rising therefrom a post 11 which is provided with a threaded bore 1.2 to receive the supporting pin 13 which is secured to the pole or cross arm in the usual manner. The post is subtantially cruciform in cross section as best shown in Fig. 4, whereby two bearing points 1 1 for the tie wire are produced, such hearing points being of a considerable distance apart, as shown, and being formed with notches 15 in which the tie wire seats. The width of these bearing points forms a secure seat for the tie wire so that displacement of the latter is prevented and also mutilation of Specification of Letters Patent.

Patented July 11, 1916.

Serial No. 811,685.

the latter is prevented. The line wire 16 is seated in the groove 15 which is formed in the post 11, and disposed in triangular relation to the notches. The tie wire 17 is passed around the post through the notches of the bearing points, as best shown in Fig. 1, and then terminally wrapped about the line wire to securely anchor the latter to the post. The base is further provided with an annular irregular flange 18, the upper edge of which is wedge shaped, as at 19, for receiving the V-shaped groove 20 formed in the lower edge of the hood 21. The hood 21 is of such size that when inclosing the post 11 a dry air space 22 is formed, so that there is no heat generated within the space; sweating cannot take place.

The hood 21 and flange 18 are provided with studs 23 and 24; for receiving the tie wire 25 which fixedly secures the members together.

The hood above described fits down upon the flange 18 of the base, and to form a moisture tight oint between the parts. For rendering the joint absolutely watertight, the meeting edges of the flange and hood are wiped with paraffin or other substance or compounds.

The line wire 16 passes through bushings 26 which are mounted in the openings 27 formed in the hood 21, said bushings being formed from any suitable or approved insulating material.

The hood 21 has formed exteriorly thereof arches 28 which are located above the outer ends of the openings 27 to shed water and prevent entry thereof into the dry air space.

All parts of the insulator are formed from glass, porcelain, other materials or substances.

By providing the dry air space 22 the dead air therein will remain dry regardless of the climatic conditions, thus affording the same conditions of insulation at all times. As there will be no heat generated in the space 22 the objection of sweating is eliminated.

The hood 21 may be easily removed when it is desired for any purpose whatsoever.

lVhat is claimed is In a device of the class described, the combination with a base, of a post rising therefrom. a hood detachably mounted on the base, the base and hood having notches therein, bushings mounted in the notches through which a line wire is adapted. to ex- In testimony whereof, I afiix my signatend, the post having a notch therein for the ture, in the presence of two Witnesses. reception of said line Wire and a U-shaped EARLE HARLAN Wire embracing the post and secured to the line Wire adjacent to the bushing, the post Witnesses: having notches therein in Which the last J. G. SMITH, mentioned Wire is seated. W. W. SNOW.

Copies of this patent may be obtained for five'cents each, by addressing the Commissioner of Patents,

Washington, D. G. 

